Crankshaft class (crank pin)
There are four different classes of crankshaft avail-
able (0, 1, 2, 3), selected in relation to crank pin
diameter.
There are four different classes of crankshaft avail-
able (E1, E2, ...) selectable in relation to connect-
ing rod weight.
Key:
* Class according to connecting rod weight.
** Class according to crank pin diameter.
*** Serial number for traceability and indicating date.
SHAFT CATEGORY
Class Crank pin diameter (mm)
0 42.000 - 42.006 mm (1.65354 - 1.65377 in)
1 41.994 - 42.000 mm (1.65330 - 1.65354 in)
2 41.988 - 41.994 mm (1.65307 - 1.65330 in)
3 41.982 - 41.988 mm (1.65283 - 1.65307 in)
See also
Removing the flywheel cover
Selecting bushings
There is only one dimension class for the connecting rod. As a result, the bushings used must be
selected in accordance with the dimension class of the crank pin.
BUSHINGS
Crank pin diameter Connecting rod class 1
Crankshaft class 0 Semi-bushing type E (green)
Crankshaft class 1 Semi-bushing type A (red)
Crankshaft class 2 Semi-bushing type B (blue)
Crankshaft class 3 Semi-bushing type C (yellow)
Selecting connecting rods
Not all weight classes are available as spare parts. Only the two most significant weight classes are
available - refer to the following table for selection:
CONNECTING RODS
Class according to crankshaft weight Original connecting rod class
E1 Brown connecting rod
E2 Blue connecting rod
E3 Yellow connecting rod
E4 Green connecting rod
E5 Pink connecting rod
E6 Black connecting rod
E7 White connecting rod
CAUTION
THE CONNECTING RODS INSTALLED ON THE SAME ENGINE MUST BE OF THE SAME COLOUR
AND MUST USE THE SAME TYPE OF ASSEMBLY WITH THE CRANKSHAFT.
DORSODURO 1200 ABS - ATC Characteristics
CHAR - 57
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